How can I build a form that will send me emails and allow users to edit their submission anytime

need to create a resume for the students. all students need to fill it through link.the filled details should to particular mail. the reponses should be edittable by students for three years

All forms you setup will allow you to:

1. Let users fill it out

Related guide: How-to-Create-Your-First-Web-Form 

2. Decide where you want the emails to be sent after submission

Related guides:

Setting-up-Email-Notifications

How-to-Find-and-Change-the-Email-Address-Used-for-Notification-Email 

3. Add an EDIT LINK to the emails your respondents receive so they can edit their forms whenever they want

Complete guide: How-to-Let-Users-Update-Their-Form-Submissions-at-a-Later-Date 

I strongly urge you to explore our Form Builder and User guides at the very least to familiarize yourself with our platform.